White lead is
a basic salt
an acid salt
a double salt
a normal salt
Correct Answer :
A. a basic salt
Related Questions
Colour blindness is
a congenital disease
a communicable disease
an acquired disease
a contagious disease
A metal which occurs 'free' in nature is
gold
zinc
tin
molybdenum
Tincture iodine is a solution of
iodine in potassium iodide
iodine in alcohol
iodine in water
iodine in carbon disulphide
The presence of dust particles in air serves
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
The raw materials required for the manufacture of glass are
silica, sodium nitrate and soda ash
silica, limestone and sodium nitrate
silica, sodium oxide and limestone
silica, soda ash and limestone
The neutron was discovered by
Chadwick
Madam Curie
Becquerel
Aston
Consider the following statements: Hard water is not suitable for
1) drinking
2) washing clothes with soap
3) use in boilers
4) irrigating crops
Which of these statements are correct?
1 and 3
2 and 3
1, 2 and 4
1, 2, 3 and 4
Ozone is an allotrope of Oxygen, containing ______ atom/s of oxygen per molecule instead of two.
three
four
one
five
Which of the following is not an alloy of copper?
Bronze
Brass
Solder
Gun metal
The kinetic energy of gas molecules
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
Concrete is a mixture of
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
The compound or nitrogen used in dry cells is
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
Marble is
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
Hypo' is
sodium nitrate
Potassium nitrate
sodium thiosulphate
ammonium chloride
The flux added in the blast furnace is
Limestone
FeO
SiO2
MgO
Boiler scales' contain
calcium carbonate
magnesium bicarbonate
calcium sulphate
magnesium sulphate
Which of the following is not a physical change?
Distillation of water
Action of heat on potassium chlorate
Powdering of glass
Burning of an electric lamp
Which among the following is a local anaesthetic?
Chloroform
Morphine
Streptomycin
Cocaine
A valuable by-product in the manufacture of soap is
stearic acid
sodium hydroxide
palmitic acid
glycerol
Water always contains hydrogen and oxygen in the ratio 1:8 by weight. This is in accordance with the
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of Mass
Law of Reciprocal Proportions
Which one of the following metals is used to extract another metal?
Lead
Tin
Zinc
Aluminium
Lunar caustic is
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
Vinegar is the trade name for
chloroform
acetic acid
phenol
carbon tetrachloride
Graphite la a good conductor of electricity because
it is an allotrope of carbon
it gives CO2 on heating
it contains free electrons
it is oxidised to graphitic acid
A mixture of ethyl alcohol and water can be separated by
evaporation
sublimation
using a separating funnel
fractional distillation
Which one of the following is used in dry cleaning of garments?
asphalt
naphtha
diesel oil
lubricating oil
A mixture of naphthalene and sand is separated by
evaporation
using a magnet
sublimation
sedimentation
Cinnabar is an ore of
lead
zinc
mercury
chromium
Which of the following is not a food material?
silicate
protein
fat
carbohydrate
Brass contains
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc